Gunpowder-mill



(No Model.)

. l sweets-sheen. P. OLIVER.. GUNPOWDBR MILL.v

' Patented f m r May' 15, 1888.`

UNiTED STATES PATENT f omc-n.:

PAULA. oLrvER, or otivnns MiLLs, rEnNsYLvANIVA.

SPECIFIIZCAIION forming part of Letters Patentl'o. 382,825I dated May 15, 1888.

application nien rune 14, las?. serial no. A241,269. (No model.)

To all whom it vmay concern: c

Be it known that I, PAUL A. OLIVER, a citia zen of the United States, residing at Olivers Mills, in the county of Luzerne and State of Pennsylvania have invented certain new and useful Improvements in Gunpowder-Mills and I do hereby declare the following to be a full, clear, and exact description of` the invention, such as will enable othersY skilled in the art to which it appertains to make and use the same.`

This invention` relates to mills or machinesY specially adapted for manufacturing guupowder of the class shown inthe Letters Pat. ent issued to me, No. 76,510, dated April 7, 1868, and Reissue No. 3,209, dated November This invention consists in the novel construction and combination ofthe parts, here-- inafter fully described and claimed.

In the drawings, Figure 1 is an end elevation of the machine.' Fig. 2 is a vertical cross. section through the machine. Fig. Bis an elevation of the end shown in Fig. 1, with the gearing removed to yshow the circulating-pipe connections. Fig. 4 is a side elevationl'of the; complete machine. Fig. 5 is adetail end View of a portion of a side frame.. v

Aare the side frames, and B are outer frames for carryingthel ends of the driving-shafts.

v C is the base-plate, to which lthe frames are bolted. The side frames, A, have deep slots in them, in' which are slid the subordinate frames G. R are bolts which secure the subordinate frames in position in the side frames.

Two rolls, D and D', are journaled in each of the subordinate frames- G, except the top one, which has the distributing-rollers E F] instead. Fach roll D and the roller E are made adjustable land journaled in boxes sliding in long slots in the subordinate frames.- v

F are adj usting-screws for regulating the position of the sliding boxes. Each roll D is made hollow, and has cold Water circulated through it by means of the inlet and outlet pipes Q Q', which are connected with the seriesof rolls, asshown, and provided with union-joints Q2. The construction of these hollow rolls D is more clearly described in a separate application for Letters Patent filed greater speedthan the lrolls' D, and are provvided with pivoted adjustable scrapers H, having thumb-screwsIforrsetting them up against the rolls. The construction of these scrapers is more clearly described in a separate application for- Letters Patent, Iiled'of leven date herewith, SerialNo. 241,270. l The rolls D do not require Scrapers, as the greater speed of rollers D', which work against-them, keeps themclean. f l

I n consequence of the much greater speed of rolls D', the material does not fall perpendicw larly after passingthrough each pairs of rolls, but isthrown under the rolls D.l The pairs of rollsare thereforeplaced ina zigzag series,

and lthe.subordinate frames G areslid into the ,side,frames,'A, from opposite sides alternately. l

This constructionfadmits -of any pairA of 4rolls andtheir subordinate frames being removed lwithout disturbing. the jother -parts. H The wholemachine'is verycompact, and-does not require a very high Ymill-house tovbe built over jt. i l I. vK 'shows gather-boards which preventy any of the material from fallingfperpendicularly when themachine is being stopped or started. PIPZ are fast and loose pulleys for the driving-belt, mounted on the end of shaft L, which extends clear across one end of the machine. u i L2 is a toothed wheel secured uponshaft L and gearing vinto a toothed wheel, L4, secured upon the shaft L, which formsv an extension of oneof the high-speed rolls D.

M are intergearing toothed Wheels-secured on the end yof the rolls Dat one side of the machine. Y l t;

The gearing for driving the slow-speed rolls D consists of the toothed wheelL,secu1ed'on shaft L at the` other side ofthe machine,`which gears into the toothed wheel La, secured upon shaft L, which forms an extension of one,of

the rolls D.

M are toothed wheels rolls D together.

which couple all the The series of toothed wheels M M cause each pair of rolls to revolveat the same relative speed. `i v N is a small pulley secured on the shaftL and connected bythe belt N with the ,large pulley N, secured upon vshaft Ni.' r; f

N* is a vsmall toothed wheel secured upon shaft N3, which gears into the large toothed A IOO wheel N5, secured upon an extension of the roller E. The roller E has a small toothed wheel, O3, upon one end of it, which gears into the larger toothed wheel, O, upon the end of roller E, so that roller E is driven the faster. As indicated by the proportion of the various toothed wheels, the rollers E E' are driven much slower than the rolls D D. The roller E also has the toothed wheel N6 secured upon its spindle, which gears into the toothed wheel N7, secured upon shaft O, which drives the conveyer-belt O', and thereby delivers a continuous feed of material to the distributing rollers E E', as more fully described in a separate application for Letters Patent, filed of even date herewith, SerialNo. 241,268. V.The rollers E E distributethe material and correct any slight unevenness or irregularity of the feed, which might cause an explosion betwecn the rolls D D if not checked.

P is the delivery conveyer-belt passing over roller P5, and more fully described in the last above mentioned separate application.

P4 is a pulley for driving the belt P, which receives its motion from the shaft L by means of the pulley l6 and the belt P3, which passes over the said pulleys P6 and P.

It will be noticed that the feed and delivery are automatic and are driven from the machine itself; also that any pair of rolls can be removed for repairs without taking the whole machine to pieces. A

The arrangement of the gearing and driving pulleys is such as to give very great accessibility to all the various parts of the mill, both for repair and adjustment, and to allow free vent tothe gases produced when a` slight explosion occurs between the rolls, thus reducing the liability to damage of the various parts of the machinewhen such explosions occur. When a serious explosion occurs between the rolls', which wrecks the upper portion of the mill, the supply of powder is cut oii` by the conveyer ceasing to receive its motion from the mill.

What I claim iss- 1. In a gunpowder-mill, the combination of the side frames provided with deep slots, the subordinate frames removably secured within the said slots, and the adjustable rolls for the powder journaled in the said subordinate frames. I

2. In a gunpowder-mill, the combination .of

the side frames provided with deep slots arranged alternately, with their open ends at opposite sides of the side frames, the subordinate frames removably secured within the said slots, and the-adjustable rolls for the powder f journaled in the said subordinate frames.

3. In a gunpowder-mill, the combination, with the adjustable roll D, of the hollow roll D', drivenat a much greater speed, pipes for circulating water within the hollow roll D', and a scraper for preventing accumulations upon the surface of the said hollow roll.

4. In a gunpowder-mill, the combination of the adjustable rolls D and the hollow rolls D',

arranged zigzag in pairs, one above the other, the rolls D being driven at a much greater speed than the rolls D, gather-boards for guiding the material between each pair of rolls, pipes for circulating water within the hollow rolls, and the Scrapers for cleaning the said hollow rolls.

5. In a gunpowder-mill, the combination of Ythe Vside frames, the rolls moving with unequal speed and journaled in the frames in pairs, one above the other, toothed gearing connecting each similar roll so that each pair is driven at the same relative speed, and a pair of distributing-rollers journaled above the'top pair of rolls, also driven with unequal speed, but at a much less velocity than the said rolls, whereby the feed of material to the said rolls is rendered perfectly uniform.

6. In a gunpowder-inill, the combination of the side frames, the rolls moving with unequal speed and journaled in the side frames in pairs, one above the other, the toothed gear-wheels M and M on opposite sides of the machine connecting each similar roll, so that each pair is driven at the same relative speed, the toothed wheels L2 and L* for operating the wheels M, the toothed wheels L and La for operating the wheels M, and a driving-shaft passing across the machine journaled in the side frames, and having said wheels L and L and drivingbelt pulleys secured upon it.

7. A gunpowder-mill comprising aseries of revoluble rolls arranged in pairs, one above 'the other, and driven at unequal speed, a pair of slow-moving distributing-rollers journaled above the top pair of rolls, a roller for the feedconveyer belt journaled above the distributing-rollers,a roller for the delivery conveyer-belt journaled below the lowest pair of rolls, a shaft provided with driving-pulleys and extending across the machine, and intermediate gearing connecting all the rolls and rollers with the said drivingshaft, the whole supported by side frames and mounted upon a common base-plate, substantially as set forth.

8. In a gunpowder-mill, the combination of the side frames, A, provided with deep slots arranged alternately with their open ends at opposite sides of the side frames, the slotted subordinate frames G, provided with flanges, the bolts R, passing through said flanges and securing the subordinate frames in position in the deep slots of frames A,the rolls D and D', arranged zigzag in pairs, one pair above the other, and carried by the subordinate frames G, the separate sliding journal-blocks for the rolls D, and the adjusting-screws F for regulating the position of said rolls D, substantially as set forth.

In testimony whereof I afhx my signature in` presence of two witnesses.

PAUL A. OLIVER.

Witnesses:

CHAs. P. HUNT, GEO. GUNTZ.

'IOU

IIS 

